Adjustable leg



Filed April 23, 1928 IP w 2 z I6 ,4r nl; 13 y l sl, ffm, "15 15 #-10 Y 1 g, 1,-, 1 f 1e i ls/f i; i I l @5% @www5 iiatenteil Apr. 2, 1939.

UNITED STATE S PATENT OFFlCE.

JHN J. 1-lltIiMtCI-idli, 0F SCHENEGTADY, NEW YGRK, ASSIGNOR TO L. E. UASS, INC., Fa SCEEMJCTADY, NEW YORK, A CORPORATION OF NEW YORK.

Application filed April 23,

rthis invention relates to the provision of improved means for adjustably fastening and clamping a member within a tubular sheetinetal leg` to provide` 'for adjustability of the height ot the leg.

A 'further object resides in the provision ot an interior clamping means adapted to be disposed within a leg and to spread a sleevelilre member into clamping cooperation with the tubular leg upon the adjustment oit a member which projects through and outside or the tubular leg.

Further and other objects will be hereinatter set i'orth in the accompanying specif tication and claims and shown in the dra-wings, which show several embodiments oi' the invention.

In the drawings:

Figure 1 is an elevational view of a tubular leg incorporating my improvements.

Fig. 2 is a cross-sectional View taken substantially on iine 2--2 of Fig. 1.

Fig. 3 is a detail sectional view taken substantially on iine 3 3 of Fig. 2.

Fig. e is a detail cross-sectional View of a modilication.

ln more detail in the drawings, is the outer tubular leg member within which it is desired to adjustably and telescopioally support a member 11, which is adapted to carry a suitable caster or other part at its ifoot as indicated at 12. In order to permit clanlping member 1 1 at various relativo vertical jmsitions with respect to member' 1() and obviate the possible .riding of the parts which would render it diiicult to make subsequent vertical adjustments the 'following clan'iping devices are provided.

A conventional set screw 13 passes through an opening 1d in the outer tubular leg 10.- The shank oi this set screw likewise passes through vertical slot 15 which is termed in the inner sleeve-like member 11. Disposed within the sleeve-like member' are a plurality oi ciamping parte, two such parts being here shown and respectively designated 16 and 16at ltig. 2). These parts are substantially semi-circular and are each provided with a recess 17 adapted to receive a nut 18, so as to prevent its rotation upon adjustment of the set screw. ll hen it is desired to clamp the 1922i Serial No. 272,233.

member 11 at any desired vertical position with respect to 10, the set screw 13 is first backed off so that the tip or end portion 19 ot the set screw out of abutting Contact with the member 16. The parts 16 and 16 are now relatively loose within the Sleeve member 11 and this sleeve can be freely adjusted with respect to the outer tubular leg to any desired vertical position. After proper vertical adjustment is made the set screw 13 is tightened causing the nut 18 and the tip 19 of the set screw to spread parts 1G and 16a apart, thereby spreading the sleeve 11 and clamping' it tirmly to the tubular leg.

According to the modification shown in Fig. 4E, a nut engaging recess 17a is likewise provided but at the end of the set Screw 132l it is shown tapered as at 18- This acts as a spreader to spread apart the two clamping members 1 and 16C.

By the foregoing clamping devices5 a telescopic member may be clamped within a metal leg at any desired point and the means for clampingl do not cause any marring of the parts which might interfere with subse quent telescopic adjustment.

What claim is:

1. A clamping means for interiorly clamping` a sleeve-like member within a tubular leg comprising a pair of clamping members disposed within 'the sleeve-like member and means irn'ojectinn` without the tubular leg` lor sjneading said parts apart and for thereby elampin the sleeve-like member to the tubular leg.

2. A clamping means for interiorly clamping a sleeve-like member within a tubular leg comprisingl a pair of clamping members disposed within the sleeve-like member and having portions thereof shaped to receive a nut and prevent its rotation, a set screw extending without the tubular leg and having a threaded portion to engage the aforesaid nut whereby said parts may be spread apart for clamping the sleeve to the leg or allowed to be loosened to permit adjustment of said sleeve and leg.

3. A tubular leg having a sleeve within the same vertically adjustable with respect thereto, means for clamping and unclamping said sleeve with respect to said leg, said means comprising clamping members Within said rotation of the latter being adapted to spread sleeve, a set'serew extending through the the clamping members apart and clamp the 1o Atubular leg and having a shank portion Sleeve to the tubular leg by spreading the 'said shank portion having threads thereon extending through va slot in said sleeve, former in the latter.

A In testimony whereof I hereto aix my sigand a nut upon said threads and restrained nature.

against rotation by the clamping memt bers, said nut and set screw upon the JOHN J. OPREMCHAK. 

